Have been watching this thread for ideas. Mine is by itself (potted).

I think my best choice would be a dark violet (Victor Hugo) or purple for a "bitone" contrast. But I don't know if the short ones come in those colors?

Love love Cezanne.

Maybe try Fleuri. It is dark purple and gets 4' tall.

Here is a link that might be useful: Fleuri

I have lots of established clematis so sometimes I take some of them for granted. Well just a couple of days ago I realized that "Cezanne" had still several nice flowers. And counting back I think this clem has been in bloom for about 6 weeks. It is an excellent compact clematis. Mine is permanently in the ground and climbs up a cedar.

If there were any still available I would get another to replace a less productive clem.

Is there anything comparable?